This study used thermogravimetric analysis to investigate activation energy and pre-exponential factor of corn cob pyrolysis via various model-free methods. For applying kinetics of pyrolysis reaction in commercial simulation tools, a representative single reaction of overall pyrolysis reaction would be preferable in provided toolboxes. However, the kinetic parameters for this single reaction should be suitable to cover all the conversion range. Thus, the kinetic parameters were developed as polynomial regression models. The results showed that verification of using the quadratic regression models derived via Friedman method ( E a = ? 488 . 68 X 2 587 . 78 X 64 . 104 and ln ( A ) = ? 106 . 58 X 2 116 . 71 X 17 . 232 ) had very close agreement with the experiments in entire range of conversion. These regression models could be widely applied in slow pyrolysis and gasification. However, the constants derived via Ozawa–Flynn–Wall? method ( E a = 248 . 05 kJ mol ? 1 and A = 3 .05x10 22 min ? 1 ) were simpler for use in some applications which had no effect of pyrolysis at temperature? below 300?°C or conversion below 50%, like fluidized bed pyrolysis/gasification.
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机译：该研究使用热重分析来研究通过各种无模型方法来研究玉米棒热解的活化能量和预指数因子。为了在商业模拟工具中施加热解反应动力学，在提供的工具箱中将优选整体热解反应的代表性单一反应。然而，这种单一反应的动力学参数应该适合覆盖所有转化范围。因此，动力学参数被开发为多项式回归模型。结果表明，使用弗里德曼方法衍生的二次回归模型的验证（e a =Δ488。68 x 2 587。78 x 64. 104和ln（a）=？106. 58 x 2 116。71 x 17。 232）与整个转换范围的实验非常接近。这些回归模型可广泛应用于缓慢的热解和气化。然而，常量通过ozawa-flynn-wall衍生出来？方法（e A = 248. 05 kJ mol？1和a = 3.05x1022 min？1）在某些应用中使用热解效果的一些应用更简单？低于300？°C或转化率低于50％，如流化床热解/气化。
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